Oil burning apparatus



June 6, 1939. R, w, BECRETT 2,161,220

on. BURNING' APPARATUS Filed Aug. ll, 1956 `3 Sheets-Sheet l lNvENfoR BY 'Z ATTORNEY June 6, 1939. R. w. BE'CKETT 2,161,220

OIL BURNING APPARATUS Filed Aug. ll, 1936 3 SheetS--Sheetl lNvENTo ATTOR NEY June 6, 1939 R. `w. BECKETT on. BURNING APPARATUS Filed Aug. 11, 193e s Smets-sheet s INVENTOR Bf?, MM#

ATTORNEY PatentedJulne 1939 UNITED STATES PATENT GFFICE l 2,161,2z0 on. BURNING APPARATUS Reginald w. necketeaoeky River, ol'iio, assignor to Cleveland 'Steel Products Corp., Cleveland, Ohio, a corporation voLOhio f Application August V11, 1936, serial No. 95,395'

7 (ci. 15s- 4) This invention relates to oil burning apparatus, more particularly to 'oil burning apparatus of the horizontal rotary One of the objects of the present invention is .I to provide a means by which a. rotary type oilA btu'ning apparatus may be quickly 'and Aeasily mounted as a-unit in a furnace structure. j

Another object is to provide a furnace-burner unit of such new and improved construction that' l0 the burner, including atleast a portion of its controls, may be placedin'and removed from 'the furnace unit as a unitary structure with a mini- -mum of time and labor.

Another object is to provide a furnace-burner unit of the vwall flame type. 'wherein the fuel is projected above ahearth element and wherein combustion is initiated adjacent a substantially endless element located near the wall of the furnace, of 'such new and improved structure that the burner, hearth, and at least a portion of the associated 'parts may be quickly and easily mount-- ed in and'removed from the' furnace unit as a unitary structure.

' With the above vand other objects vin view, the

25 present invention consists in certain features of construction and combinations of parts to bev `hereinafter described with reference to the ac'- companying drawings, and then claimed.

In the drawings, which illustrate a suitable n embodiment ofthe present invention,

Fig. 1-is a front elevation of the furnace-burner Haenen-enlarged unit parthrough the burner the le oi Hg. 5 is a perspectiveview of, the.opening viewof the burner Fig. 13 is a section taken on line Iii- I3 Vof Fig. 12; and

Fig. 14 is a section' taken on line I4 -I4 of Fig. 13. Y y Referring'tojhe accompanying drawings, in which like numerals refer to like parts throughout the several views, there is shown, for the purposeof illustration, a furnace ofthe warm aintype,

and a rotary burner of the wall flame type, i. e., i

' a burner in which the fuel 'is projected centrally from within the furnace combustion chamber` 'and impinged against a substantially endless element, located fnear the furnace wall. for combusrtion,

Heretofore, in burners of this type, it has beennecessary to 'assemble' the burner, the hearth, the fuel intercepting member and controls, .such as oil valves, transformer and ignition electrodes, as separate units. 'I'his requires considerable time and labor, dueto the fact that a large por,- tion of th'e assembly work has to be done within thefurnace combustion chamber where the. space is limited.

Inaccordance with the present invention, thesev parts are assembled together, apart from the furunitarystructure, and vmay be removed from the furnace as'such.

It is to be understood, also,that theinvention 'is applicable to furnaces otherthan the hot air type, and vto rotary burners other than the wall ame type.'

Referring to. Figures 6, I and 8, theunitary ing I having a horizontal portion 2, downwardly extending side portions 3 and aA downwardly ex-v tending rear portion l, and the forward portion of which has an opening 5 defined by the top' and nace, and are mounted within the furnace as a burner structure is carried by a supporting castside portions. The top or horizontal portion 2 has an opening Goifset toward the rear portion 4, but located centrally between the side portions 3. Positioned upon the top or horizontal portion 2,

substantially coaxial with the opening 6,' is an annular" sheet of insulation 1, andlsupported on' the insulation 'I isa casting or plate 8 which sup of th e burner.unit, a

ports the distributing,` device 8 and hearth structure to b hereinafter described. The plate 8 is tively, and an arcuate portion I3 of larger radius at the forwardend. 'I'he portion I8 has an upwardlyfextendlng flange I4, and extendingl inte-- secured to the horizontal portion '2 by means of wardly extending lugs I1, which, as shown in Fig. 6, have faces I8 concentric with the. ii'ange I4, but spaced therefrom. Y The distributing unit 9 includes casing I8 extending through the opening I0, and

Ahaving a circumferential ange I9 at its dlower end, which iiange I9 abuts the under side of plate 8 and is secured thereto by bolts 20, the heads of which seat upon portions 2| extending radially inwardly from. the openingdening flange 22 of the plate 8.

Supported by brackets 22 secured to the ange I9 is a motor 23 having a'hollow 'shaft 24, the ends of whichproject beyond the motor proper. The lower end of the shaft 24 carries a threaded element 25, the threads thereof running in a direction opposite to'the direction of rotation of the shaft 24. The element 25 is surrounded by an oil receiving casing 28 secured to the 'motor housing. l

The upper end of shaft 24 carries a closure cap 21 having radially extending oil discharge tubes 28 for receiving oil from the hollow shaft 24, and a plate 29 having underside thereof. The annular casing I8 is preferably provided with shutter controlled airopenings 3I.

The oil receiving casing 26 is connected by a conduit 32 with suitable oil control .valves 33, which, in turn, are connected by a conduit 34 with a source of fuel supply. The control valves are supported by a bracket 35 carried by a cross member 38 which extends between the side portions 3 of the supporting casting'i.

Seating against the radially outer face of the flange II is an upwardly extending endless metal fan blades on the ring 31 of suitable heat resistant sheet metal, and similarly tting against the radially inner faceof the iiange I2 is an endless metal ring 38, also of heat resistant sheet metal. The rings 31 and 38 are provided with spaced L-shaped stampings 31a, which seat upon the plate 8 which support the rings thereon.

The space between the ring 31 and the casing I8 is lled in with a suitable refractory material 39, the level of which is below the ring 31 as shown in Fig. '1, and the space between the rings 31 and 38 is lled with a suitable refractory material 4Il,` but below the upper edges of the rings, asshowninFig. 1. Y

Associated with the outer ring 38 is a removable endless oil intercepting member 4I which fits within the ring 38 and seats upon the refractory 48. 'I'his member` carries a plurality of deiiecting elements 42 of heat resistant sheet metal. Each element 42 is provided with down-turned portions 43 which are formed with slots. 44 that t about the member 4I, as shown in Fig. 7, to 'support the element above the edge of the member 4|, a solid portion 45 extending inwardly and down- -wardly at an angle, and narrow outer portions 4 8 extending alternately upwardly and' downwardly at an angle. The elements 42 are arranged on the member 4I in closelyspacedfrelation, and the solid portions 45, thereof, overhang the space 41 between the ringsA 31 and 38, whileA the alternately inglined portions 48 extend outwardly beyond the ring 38.

The oil discharged from the distributing unit,

an annular g manner shown in Fig. 4.

as will be later more y described, impinges against the endless member 4I, and during the starting period is ignited by means of sparks produced between the' member 4I which is grounded' vto form one electrode and electrodes 48. The

electrodes 48 are substantially diametrically opposed, and each comprises a vertical rod having a lower portion 48a encased within a. non-conductive Acasing 49, and an upper portion 48h which -is reversely bent and formed with a tip 50 spaced from the member 4I.. The casing 49'is mounted in a preformed refractory element 5I which is embedded in the refractory 39 substantially at the level thereof adjacent the inner endless ring 31.

Y As shown in Fig. 8, the encased portion of. each electrode extends downwardly through the re- Ifractory 39, the plate I5 and the insulation 1 into the space 52 the supporting casting I.

The ends of the electrode portions 48a are pro vided with terminal connectors 53 which are connectedfby wires 54 with a transformer 55 supported on the cross member 38.

As will be seen in Figs. 6, 10 and 11, the looped portions 48h of the electrodes are arranged at an angle and are directed in the direction of rotation of the distributing unit, and also, the ring 31, in advance of each electrode, is formed with a s1ot58 extending to the level of the refractory materials 39 and 40 as shown in Figs; 6 and 8. Y

.The leads for the motor 23 are encased within a conduit 51 and connected with the outlet box- `*portion 55a. The leads 58 for the outlet box portion 55a are enclosed withina conduit 59.

Referring to Figs. 1 to 4, the furnace shown for illustration, includes an annular. shell 88 having van upper end 8l and a lower end 82. The shell 88 isprovided with a rectangular shaped Aopening 83 which is dened by an extension 84 of the lower end 82, an outwardly extending upper iiange and outwardly extending side iianges 88, joined with the ends of the extension 84 and 'the upper ange 85. The marginal edges ofthe iianges 85 and 88 are formed withiianges 81, and the extension 84 is inclined upwardly slightly and provided with a narrow iiange 84a.

The unitary burner structure comprising the lower portion of the furnace is arranged with a suitable insulation material -88 such as mineral Aelements previously described, with the excep- Y tion of the endless member 4I and 'deiiector elewool, in such a. manner that when the unitary structure is moved into its assembled position, the spaces between the rear portion-4 and side portions 3 and the casting] will be filled with the insulation material 88.

When the unitary burner` structure is in its lfinal assembled positionZ the extending Portions I5`of the plate 8 engage wlththe wall of the Y shell 88 and locate the same. Also, the outer face of the iiange I4 of the arcuate portion I3 sub-v stantiallyforms a circumferential continuation of the inner face of the shell 88.

After assembly of the lmitary burner structure, an arcuate plate 83 is positioned within the opening 83 with its lower end seated Yon the por*-l tion 2 -of -the casting I, and positioned between the ange I4 and the faces |80! the lugs l1, and with the side edges 18 abutting thelilanges 88A adjacent the inner edges thereof to -form a cir- 69 and the flanges 66 are then preferably sealed with a suitable refractory. A.

'I'he space between the outer ring 38 and the circumferential furnace Wallis next lled with a suitable heat insulator 1|, such as for example, asbestos flour, after `which the endless member 4|, with the defiector elements 42 assembled thereon, is then moved through the space above the plate 69 in a tilted position into the furnace chamber and disposed in position within the ring 38.

A front plate 13 is then secured to the side flanges 61 by means 'of screws, the plate 13 having an open frame like portion 1417 tting around the top-and sides of the casting I as shown in Figs. 1 and 2, the open portion thereof carrying a grill 15.' The space closedin by plates 13 is filled with a suitable insulation material 12, such as, for example, mineral wool. A second front plate 13b is secured to the flanges 66 above the plate 13, and carries a door frame 14 and door 14a.

Bridgingthe space between the plate 69 and the plate 13b is a member 16 which is supported thereby. The plate 13, plate 13b, member 16 and portion 14b completely seals in the insulation 66 and.12. The joints between the member 16 and plates 69 and 13b and between the member 16 and the side flanges- 66 are preferably sealed by means of a suitable refractory cement.

Although not shown in detail, a suitable jacket 11 surrounds the furnace unit, portions of which are connected with the front plates 13 and 13b. Also that portion only of the furnace with which the present invention is associatedrvhas been shown in detail.

The unitary burner structure may be easily and relatively quickly removed from the furnace by first removing the front plate 13, insulation 12 and plate 69, after breaking the refractory joint seals previously described, and, then, after removing the member 4| andv elements 42, or

elements 42, alone, by sliding the casting through the opening 66.

During the initial starting period, the distributing head discharges "the oil and air in a radial assume a red heat, with the result that the vaporized combustible mixture rises and is deflected by the portions 45 through the spaces between the member 4| and portions 42 where it burns between the member 4| andthe face o f 'shell 60 in. an annular ring of flame, which has a rotary wall wiping action, the heated portions 46 serving to further vaporize the mixture and cause turbulence.

The burner structure per se and the construction of the member 4| and defiecting elements 42 associated therewith, and the electrodes and arrangement thereof with respect to the member 4| form the subjects matter ofgco-pending applications.

'Theinvention shown and described is" relatively simple in construction and provides a -means whereby a rotary burner, including its associated parts and a hearth may be conveniently and quickly inserted in and removed from a furnace as a unitary structure.

Although a single embodiment of the invention has been herein shown and described it will be understood that numerous modifications of vthe construction shown may be resorted to without sides of a combustion chamber, said wall having an opening therein approximating the Width of said chamber, and a hearth structure movable as a unit through said opening to form the bottom of said combustion chamber, said furnace unit alsohaving a removable wall member arranged to cooperate with the sides of said opening to form a continuation of said wall across said openmg.

2. Apparatus of the character described comprising a furnace unit having a wall defining the sides of av combustion chamber, said wall having an opening therein extending from the bottom of said unit to a region intermediate the top and bottom thereof, a supporting element, having a hearth structure supported thereby, said supporting element and hearth structure being movable as a unitary structure through, said opening into the interior of said unit to form the bottom of said combustion chamber, and a removable wail member cooperative with said wall to form a continuation thereof across said opening above said hearth structure.

3. Apparatus of the character described comprising a furnace unit having a wall defining the sides of a combustion chamber and supporting lcombustion chamber and to provide a chamber of substantial volume between said hearth structure and the plane of the bottom of said unit.

4. Apparatus of the character `describedcom prising a furnace unit having a wall defining the sides of a combustion chamber, said wall having an opening therein approximating the width of said chamber, and a hearth structure having a substantially endless upwardly extending iiame wall adjacent the periphery thereof and a central opening therein, said hearth structure being movable as a unitary structure through said opening into the interior of said unit-to form 4the bottom -of said combustion chamber, said furnace unit including a removable wall member cooperable with said hearth structure and with said combustion chamber wall to form above said hearth structure a continuation of said combustion chamber wall across said first mentioned opening.

5. Apparatus of the character described comprising a furnace unit having a wall defining the sides of a combustion chamber, said wall having an opening therein approximating the width of' said chamber, and a hearth structure including a proper supported on said horizontal portion, said hearth structure being movable as a unit through said opening into said combustion chamber to 'form the bottom thereof.

6. Apparatus of the character described comv said opening into said combustion chamber to` form the bottom thereof, and means cooperable with said wall and with said hearth structure to form a continuation of said wall above said hearth structure across said opening.

7. Apparatus of the character described cornprising a furnace unit having a Wall dening the sides of a combustion chamber, said Wall having an opening therein approximatingthe Width of said chamber, a hearth structure including a support and a hearth body thereon, movable as a unit through said opening to form the bottom of said combustion chamber, said support having a portion extending below the upper edge of said opening, and a Wall member seating on said extending portion and cooperating with the side edges of said opening to form an unbroken continuation of said wall across said opening.

REGINALD W. BECKETT. 

